Question: package simulator; public class Bus { public final int number; private final RoadMap roadMap; private int x; private int y; private int stored; public Bus(int
package simulator;
public class Bus {
public final int number;
private final RoadMap roadMap;
private int x;
private int y;
private int stored;
public Bus(int number, RoadMap roadMap, int x, int y) {
this.number = number;
this.roadMap = roadMap;
this.x = x;
this.y = y;
this.stored = -1;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public void moveNorth() {
y -= 1;
stored = 1;
}
public void moveSouth() {
y += 1;
stored = 2;
}
public void moveWest() {
x -= 1;
stored = 3;
}
public void moveEast() {
x += 1;
stored = 4;
}
public int moveSameDirection(){
if(stored == 1 && roadMap.isRoad(x, y-1)){
moveNorth();
}
else if(stored == 2 && roadMap.isRoad(x, y+1)){
moveSouth();
}
else if(stored == 3 && roadMap.isRoad(x-1, y)) {
moveWest();
}
else if(stored == 4 && roadMap.isRoad(x+1, y)){
moveEast();
}
else {
return 0;
}
return 1;
}
/**
* Move only (north, south, west, east)
* If the bus is stopped (that is, if it was just placed, or if it didn't
* move last time move() was called), then it should attempt to move north.
* If it cannot (no road, or off the map), then it should attempt south,
* then east, then west. If no move is available, it should stay in its
* current position.
*
* If the bus is moving (that is, if it successfully moved the last time
* move() was called), then it should attempt to continue moving in the same
* direction.
*
* If it cannot (no road, or off the map), then it should attempt to turn
* right. For example, if the bus was moving north, but there is no more
* road to the north, it should move east if possible.
*
* If it cannot turn right, it should turn left. If it cannot turn left, it
* should reverse direction (that is, move backward, if possible).
* If it cannot do any of these things, it should stay in its current position.
* @param x
* @param y
*/
public void move() {
int moveX = this.x;
int moveY = this.y;
if(stored == -1) {
if(roadMap.isRoad(moveX, moveY - 1)){
moveNorth();
}
else if(roadMap.isRoad(moveX, moveY + 1)){
moveSouth();
}
else if(roadMap.isRoad(moveX + 1, moveY)){
moveWest();
}
else if(roadMap.isRoad(moveX - 1, moveY)){
moveEast();
}
}
else if(stored != -1){
if(moveSameDirection() == 0){
if(stored == 1){
if(roadMap.isRoad(moveX + 1, moveY)){
moveEast();
}
else if(roadMap.isRoad(moveX - 1, moveY)){
moveWest();
}
else if(roadMap.isRoad(moveX, moveY + 1)){
moveSouth();
}
else{
stored = -1;
}
}
else if(stored == 2){
if(roadMap.isRoad(moveX - 1, moveY)){
moveWest();
}
else if(roadMap.isRoad(moveX + 1, moveY)){
moveEast();
}
else if(roadMap.isRoad(moveX, moveY + 1)){
moveNorth();
}
else{
stored = -1;
}
}
}
else if(stored == 4){
if(roadMap.isRoad(moveX, moveY - 1)){
moveNorth();
}
else if(roadMap.isRoad(moveX, moveY + 1)){
moveSouth();
}
else if(roadMap.isRoad(moveX + 1, moveY)){
moveEast();
}
else{
stored = -1;
}
}
else if(stored == 3){
if(roadMap.isRoad(moveX, moveY + 1)){
moveSouth();
}
else if(roadMap.isRoad(moveX, moveY - 1)){
moveNorth();
}
else if(roadMap.isRoad(moveX - 1, moveY)){
moveWest();
}
else{
stored = -1;
}
}
else if(stored!=1 && stored!=2 && stored!=3 && stored!=4)
stored =-1;
}
}
}
getting errors here
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